File photo / The Times-PicayuneBritney Spears "Circus" Tour kicks off in New Orleans.

Britney Spears is apologizing to fans after smoky conditions at a concert in Vancouver, Canada, led to a 30-minute delay in her show.

According to a blog post on the show by The Vancouver Sun, Spears' concert was halted for a half-hour. The Sun also reported that some audience members grew impatient waiting for the 27-year-old singer and her troupe to return to the stage.

Spears' publicist, Holly Shakoor, issued a statement apologizing to fans. The statement said "crew members above the stage became ill due to a ventilation issue."